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Crystal structure and the magnetic state of Pr0.5Sr0.5Co0.5Fe0.5O3 |
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| Authors: | I O Troyanchuk D V Karpinsky V V Efimov E Efimova V Sikolenko R Yusupov |
| Institution: | (1) Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, Minsk, 220072, Belarus;(2) Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia;(3) Berlin Neutron Scattering Center, Hahn-Meitner Institute, D-14109 Berlin, Germany;(4) Institute Jozef Stefan, 1000 Ljublijana, Slovenija |
| Abstract: | The magnetic properties and crystal structure of the Pr0.5Sr0.5Co0.5Fe0.5O3 compound are studied by neutron and x-ray diffractions using synchrotron radiation. These measurements show that this compound is a dielectric spin glass with a magnetic moment freezing temperature of about 70 K. As temperature decreases in the range 30–95 K, a structure phase transition of the first order occurs with an increase in the symmetry from orthorhombic (space group Imma) to tetragonal (space group I4/mcm). It is assumed that the transition is caused by a change in the 4f electron configuration of the Pr3+ ions. |
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